Brighton, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38.2 °F (low) to 57.6 °F (high). Annual precipitation averages 34.5 Inches. Brighton is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.5 °F | 30.5 °F | 2.34 in. |
| February | 16.3 °F | 33.5 °F | 1.86 in. |
| March | 24.4 °F | 43.9 °F | 2.24 in. |
| April | 35.5 °F | 56.9 °F | 3.17 in. |
| May | 46.9 °F | 68.8 °F | 3.85 in. |
| June | 56.3 °F | 77.9 °F | 3.75 in. |
| July | 60.0 °F | 81.8 °F | 3.38 in. |
| August | 58.9 °F | 80.1 °F | 3.41 in. |
| September | 51.4 °F | 73.9 °F | 3.02 in. |
| October | 40.4 °F | 60.8 °F | 2.8 in. |
| November | 30.7 °F | 47.2 °F | 2.53 in. |
| December | 22.1 °F | 35.6 °F | 2.19 in. |
| Annual | 38.2 °F | 57.6 °F | 34.54 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |